Eaton Cutler-Hammer Digitrip 3000 Instructions For Installation, Operation And Maintenance page 13

I.B. 17555C
TYPE SETTING
CURVE SHAPE
INVERSE TIME OVERCURRENT
PICKUP
INVERSE TIME OVERCURRENT
TIME MULTIPLIER
SHORT DELAY PICKUP
SHORT DELAY TIME
(In Seconds)
INSTANTANEOUS PICKUP
DISCRIMINATOR
(If Phase INST set to NONE)
NOTES: Curves go to constant operating time above 30 X I
Tolerance: ± 10% or 0.09 seconds, whichever is larger. Minimum operating trip time is 0.05 seconds.
Tolerance: ± 10% or 0.09 seconds, whichever is larger (>1.5 x I
For IECD, the Time Multiplier Tolerance is ±0.05 seconds.
Effective November 1999
TABLE 2.2 CHARACTERISTIC FOR PHASE ELEMENT
AVAILABLE SETTINGS
2 4
IT, I T, I T, FLAT, MOD, VERY, XTRM,
IECA, IECB, IECC, IECD
0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50
0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85,
0.90, 0.95,1.00,1.10,1.20,1.30,1.40,
1.50,1.60, 1.70,1.80,1.90,2.00,2.10,
2.20
2
Curve = IT, I T, I
0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50
0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85,
0.90, 0.95, 1.00, 1.25, 1.50, 1.75, 2.00,
2.25, 2.50, 2.75, 3.00, 3.50, 4.00, 4.50,
5.00, 5.50, 6.00, 6.50, 7.00, 7.50, 8.00,
8.50, 9.00, 10.0, 12.5, 15.0, 17.5, 20.0,
22.5, 25.0, 27.5, 30.0, 35.0, 40.0
Curve = FLAT:
0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50,
0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85,
0.90, 0.95, 1.00, 1.25, 1.50, 1.75, 2.00
Curve = ANSI MOD, VERY, XTRM:
0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9,
1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8,
1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7,
2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6,
3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5,
4.6, 4.7, 4.8, 4.9, 5.0
Curve = IECA, IECB, IECC, IECD:
0.025, 0.050, 0.075, 0.100, 0.125, 0.150,
0.175, 0.200, 0.225, 0.250, 0.275, 0.300,
0.325, 0.350, 0.375, 0.400, 0.425, 0.450,
0.475, 0.500, 0.525, 0.550, 0.575, 0.600,
0.625, 0.650, 0.675, 0.700, 0.725, 0.750,
0.775, 0.800, 0.825, 0.850, 0.875, 0.900,
0.925, 0.950, 0.975, 1.00
1.00, 1.25, 1.50, 1.75, 2.00, 2.25, 2.50,
2.75, 3.00, 3.50, 4.00, 4.50, 5.00, 5.50,
6.00, 6.50, 7.00, 7.50, 8.00, 8.50, 9.00,
9.50, 10.0, 11.0, NONE
0.05, 0.10, 0.15, 0.20, 0.25, 0.30, 0.35,
0.40, 0.45, 0.50, 0.55, 0.60, 0.65, 0.70,
0.75, 0.80, 0.85, 0.90, 0.95,1.00,1.25,
1.50
1.00, 1.25, 1.50, 1.75, 2.00, 2.25, 2.50,
2.75, 3.00, 3.50, 4.00, 4.50, 5.00, 5.50,
6.00, 6.50, 7.00, 7.50, 8.00, 8.50, 9.00,
9.50, 10.0, 12.5, 15.0, 17.5, 20.0, 22.5,
25.0, NONE
D ON Fixed At 11 x I
D OFF
4
T:
n
.
n
). Minimum trip time is 2 power line cycles.
pu
TOLERANCE CURVE #
±5%
+10% IT SC-5392-92B
2
I T SC-5391-92B
4
I T SC-5390-92B
± 0.05 SEC FLAT
SC 5393-92B
±10% MOD SC-6685-96
VERY SC-6686-96
XTRM SC-6687-96
±10% IECA SC-6688-96
IECB SC-6689-96
IECC SC-6690-96
IECD SC-6691-96
± 10% SC-5394-92B
± 0.05 SEC SC-5394-92B
± 10% SC-5396-92B
+10%
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